Paper-bag machine.



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m. 687,430.- Patented Nov. 26, 190i. 4.. M. KEIZER. PAPER BAG MACHINE.

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No. 687,430. Patented Nov. 2a, 190:.

L. M.- KEIZER.

PAPER BAG MACHINE.

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uoRRis vtrsas 0a., mom-0M0" wAsHmn No. 687,430. Patented Nov. 26; l90|-.'

' L. M. KEIZER.

PAPER BAG MACHINE.

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No. 687,430. Patented Nov. 26, 901.

' L. M. KEIZER.

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L. M. KEIZER.

PAPEB BAG MACHINE.

(Application filed June 12, 1900.;

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Patented Nov. 26, 190i; L. M. KEIZER. .PAP-ERBAG MACHINE.

(Application filed June 12, 1900).

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No. 687,430. Patented Nov. 26, l90l.

L. (M. KEIZER.

PAPER BAG MACHINE.

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L. M. KEIZER.

PAPER BAG MACHINE.

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no. 637,430. Patnted Nov. 26, l90l.

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PAPER BAG MACHINE.

(Application filed June 12, 1900.)

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FNITED STAT-Es PATENT LEWVIS M. KEIZER, OF BALTIMORE, MARYLAND, ASSIGNOR TO THE UNION PAPER BAG MACHINE COMPANY, PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

PAPER-BAG MACHINE.

SPECIFICATION forming part of Letters Patent No. 687,430, dated November 26, 1901. Application filed June 12, 1900. Serial No. 20,036. (No model.)

To (Z6 whom it may concern.-

Belt known that I, LEWIS M. KEIZER, acitizen of the United States of America, residing in the city of Baltimore, in the State of Maryland, have invented certain new and useful Improvements in Paper-Bag Machines, of which the following is a true and exact description, reference being had to the accom panying drawings, which form a part thereof.

My invention relates to paper-bag machinery adapted to open and form a bottom upon tucked tubular blanks, the object of my invention being, primarily, to provide a machine on which the whole operation of forming the bottom on the blanks can be carried on by devices moving in such a way and with such slowness of operation that the paper is folded with considerable deliberation and absence from sudden jerks, while the ,folding devices are also moved in such a way and with such deliberation as to avoid sudden jars and reversals tending to injure the machine; and my invention consists, generally speaking, in the hereinafter-described mechanism comprising a multiple series of traveling foldingbeds, each provided with independent mechanism. for acting on the tubular blanks to form bottoms upon them, and also in various special devices and details oi? construction in themselves new and particularly pointed out in the claims. 7

Reference being now had to the drawings, in which my invention is illustrated in what I believe to be its best and most convenient 5 form, Figure 1 is an end View of the tucked tubular blank such as I use in my machine; Fig. 2, a side view thereof; Fig. 3, an end view showing the end of the tube partly distended; Fig. 1, a side view of the tube in the condi- 0 tion shown in Fig. 3, showing it gripped intermediateiof its ends by a pair of rolls. Fig. 5 shows an end view of the tube still farther distended, Fig. 6 being a side View showing the tube grasped by the defining-plates G G. Fig. 7 is an end view of the tube with its end spread into the box form, Fig. 8 being a side view of the tube in the same condition. Fig. 9 is an end view of the tube with its end spread into a diamond fold, Fig. 10 being a side view 'of the tube in the same condition. Fig. 11 is so an end view of the tube with its end fully folded into a bag bottom. Fig. 12 is a side viewof the tube in the same condition shown in Fig. 11, and Fig. 13 is a side view of the tube with the bottom folded down as it is for shipment, Fig. 14 is a sectional elevation of my machine, taken as on the central sectionline 14 14 of Fig. 16. Fig. 15 is a sectional elevation taken as on the section-line 15 15 of Fig. 16. Fig. 16 isahorizontal section taken as on the section-line 16 16 of Fig. 14. Fig. 17 4 is an enlarged view in elevation of the device for moving the guidingfinger which directs the tubular blank into the folding-beds of the machine. Fig. 18 is a view showing the rela- Live position of the blank-feed rolls and deflecting-finger at the beginning of the operation of feeding a blank to a folding-bed. Fig.

19 shows the same parts in a later stage of the folding operation, Fig. 20 again showing the same parts in the later stage in the feeding operation when the blank is engaged by the takein rolls of the bed. Fig. 21 is again a view show ing the same parts in a somewhat later stage,

' and Fig. 22 shows the position of the blank at 7 the time when itis gripped by the bottom-folddefining plates to behereinafter described. Fig. 23 is a plan view showing one of the foldingbeds and the mechanism connected therewith. Fig. 24 is an elevation of the foldingbed mechanism, shown as on the section-line 24 24. of Fig. 23. Fig. 25 is a front elevation of the folding-bed mechanism. Fig. 26 is an end view of the folding-bed m echanism,shown as taken on the sectiondine 26 26 of Fig. 24. 85 Fig. 27 is a similar view taken on the sectionline 27 27 of Fig. 21. Fig. 28 is a similar view taken on the section-line 28 28 of Fig. 24:. Fig. 29 is a similar view taken on the sectionli ne29 29 of Fig. 21. Fig. 30 is an enlarged plan view of the disLending-fingers and immediately-connected mechanism as shown in Fig. 23. Fig. 31 is an enlarged sectional view of the take-in rolls and their immediate connection, shown as taken on the section-line 5 31 31 of Fig. 21. Fig. 32 is an enlarged sectional elevation of details of construction shown also in Fig. 24. Figs. 33, 34, and 35,

taken consecutively, constitute a diagramm atic illustration of the various operative devices acting on the bag-blank and the means employed for consecutively bringing it into operation. Fig. 36 is an elevation showing the application to my machine of a supplemental device having the function of distending the box into which the end of the tube is spread during the process of forming the bottom. Fig. 37 is a plan View of the same mechanism. Fig. 38 is a view showing in elevation the position of the distending device when it enters the box form. Fig. 39 is a View of the distending device taken as on the section-line 39 39 of Fig. 40. Fig. 40 is a view of the distending device taken on the section-line 4O 40 of Fig. 39. Fig. 41 isa perspective View of the blank having the box form open at its end. Fig. 42 is a View in elevation, showing the application of another supplemental device to my machine, having the function of opening or distending the mouth of the tube. Fig. 43 is an end view of the machine having this appliance viewed from the right-hand side of Fig. 42. Fig. 44 is an enlarged view of the distending-plate and the devices for operating it as shown in Fig. 42. tending-plate with its spindle and parts connected therewith, showing the position of the plate in the mouth of the tube. Fig. 46 shows the operation of the distending-plate upon the tube. Fig. 47 shows a modification of the devices shown in Fig. 30 for spreading the mouth of the tube into a box form, the spreading-fingers being represented in the positions they occupy in entering the tucks of the bottom. Fig. 48 is a plan view of the same device and in the same position as in Fig. 47. Fig. 49 shows the operation of the device in spreading the end of the top of the tube, and Fig. 50 ispa side sectional elevation showing a modification of the general construction of my machine.

In the drawings, A indicates the tucked tubular blank, A indicating the side tucks, A the cross-fold on which the blank is opened in forming the bottom, A A the side folds, and A the end folds, formed in extending the mouth of the blank into a box form.

A A 850., indicate the oblique folds formed in collapsing the box into a diamond fold and forming the triangular flaps of the diamond, which are folded inward to complete the bottom of the bag, as shown in Fig. 11.

B, Figs. 14, 15, and 16, indicates the frame supporting the feed-rolls, deflecting-finger, and actuating devices connected therewith.

B B indicate the frame of the machine proper supporting the two preferably circular-sided plates, (indicated at B B these plates being braced together by rods, &c., as indicated at B and B and having the central shaft-bearing, (indicated at B B in which rests shaft 0 of the machine, having attached to one end the gear-wheel C, (see Fig. 16,) engaged with a gear-wheel C driven by a gear Fig. 45 is an end view of the dis- C on a shaft 0', to which a driving-pulley C is attached. On the shaft 0 is also secured the gear-wheel C engaged with and driving the gear 0 which in turn drives the gearwheel C secured on the shaft 0 which shaft directly drives the lower feed-rolls D and through a system of gear-wheels (indicated at C the upper feed-roll D and the two parallel feed-rolls D D The shaft 0 has also secured to it the cam C, (see Figs. 16 and 17,) which acts on a cam-roller 0 (see Fig. 17,) attached to a pivoted segment D which segment (see also Fig. 20) is pivoted on a standard D and operates through a gear 01 on shaft d to which is attached and by which is oscillated the deflecting-finger D At D I have indicated the housing for the feedrolls already mentioned, the rolls D and D acting on the blank only through their segmental portions d 61 which engage the tube and act upon it at the same time that the take-in rolls H h are also acting upon it, and have the function of stretching the tube taut before it is engaged by the defining-plates G G.

E E are plates secured to and rotating with the shaft 0. The function of these plates is, primarily, to support the folding-beds, (indicated at F", &c.,) and their peripheries are divided into plane facets, such as are indicated at E, and to which the supports F of the folding-beds are bolted, as shown in Fig. 29, these facets being interspaced with notches, as indicated at E and E to afiord clearance for certain parts of the mechanism attached to the folding-beds. As shown in the drawings, (see especially Fig. 29,) the folding-beds are connected with plates E E through the castings F F, which support the ends of a transverselyextending plate or casting F, upon the outer ends of which are in turn supported cast-ings F F the three castings forming the frame of the folding-bed and being made in separate parts merely for convenience. The castings F supportat one end shaft-bearings, asindicated at F. They have also on their under sides pivoted supportinglugs,(indicated at F and in the rear of these lugs an extension having formed in it a shaftbearing F and above it a slot, as shown at F. These castings have also in their upper faces guide-slots, as indicated at F (See Figs. 24, 2'6, and 29.) The transversely extending casting or plate F has formed in its sides and at each end the guiding-grooves, indicated at F. (See Figs. 25, 27, and 29.) The casting is also formed with a central flared opening, as indicated at F, on each side of which are formed the openings F F, (see Figs. 23, 24, and 32,) having guides, as indicated at f formed around their upper edges. Depending from the lower sides ofthe castings F and, as shown, secured to the castings by bolts f (see Fig. 32) are the brackets F supporting the shaft-bearings F, from which extend lateral arms F (see Figs. 25, 26, and 28,) having a pivoted bearing at their outer ends, the brackets 15 supporting also near their up 

